Description
hardware flow control. It is an ideal choice in the field of industrial automation.
Distinguished according to whether there is a position sensor, first of all, it is divided into sensing
and non-sensing. That is, whether Hall or other similar position sensors are used to sense the
position angle of the stator and rotor. In air pump applications, many use non-inductive control.
The excellent algorithm of through-hole is that after the motor is running, it detects the changes in
phase current to switch the phase current. In some heavy-duty or precise control applications,
sensory methods are used.
According to the three-phase power supply of the inverter, it can be divided into square wave control
and sine wave control. The square wave control strategy is simple, and the control process is direct
and effective. It adopts a six-step commutation strategy. The CPU modulates the PWM to drive the
power switch tube to generate a three-phase power supply that can run the motor. The control strategy
of sine wave is relatively complex, but the control effect is much better.
In sine wave control, there are two main control strategies.
One is direct torque control DTC Baidu Encyclopedia. The method is to calculate the estimated values
of motor flux and torque based on the measured motor voltage and current. After controlling the torque,
the motor speed can also be controlled. Direct torque control is a patent of the European ABB company. .
The second is, space vector control FOC Baidu Encyclopedia. Its essence is to equate an AC motor to a DC
motor, and independently control the speed and magnetic field components. By controlling the rotor flux linkage,
and then decomposing the stator current, the two components of torque and magnetic field are obtained. After
coordinate transformation, the normal motor is realized. handover or decoupling control.
During sine wave control, there are many derived more sophisticated control strategies, such as feedforward
control, maximum torque control, field weakening control, etc.
In the process of controlling the motor, there are multiple feedback control loops. When controlling the output
of the motor, there is a current loop; on this basis, there is a control loop that controls the speed; when a servo
motor is used, there is a position loop control.
Display operation panel 3AUA0000040000
Display operation panel 3ASD999002B20
Display operation panel 3ASD510001C20
Display operation panel 3ASD510001C17
Display operation panel 3ASD485500A111
Display operation panel 3ASD399002B20
Display operation panel 3ASD299001B2
Display operation panel 3ASD273001-B5
Display operation panel 3ASC25H705/-7
Display operation panel 3ASC25H219B DATX133
Display operation panel 3ASC25H216A DATX132
Display operation panel 3ASC25H214 DATX130
Display operation panel 3ASC25H209/DATX100
Display operation panel 3ASC25H209 DATX110
Display operation panel 3ASC25H208 DATX100
Display operation panel 3ASC25H204/DAPU100
Display operation panel 3ASC25H204 DAPU100
Display operation panel 3ASC25H204 DAPU100
Display operation panel 3ASC25H204
Display operation panel 3ASC25H203/DAPC100
Display operation panel 3ASC25H203
Display operation panel 3AFE68300746
Display operation panel 3AFE61320946P0001 POS.A6091
Display operation panel 3ADT316300R1510 SDCS-PIN-4B
Display operation panel 3ABD10058721DX5221
Display operation panel 37911-4-0338125
Display operation panel 23BA20D
Display operation panel 216VC62a HESG324442R13/E
Display operation panel 216VC62A HESG324442R112/F
Display operation panel 216VC62a
Display operation panel 216VC62A
Display operation panel 216NG63A HESG441635R1
Display operation panel 216NG63
Display operation panel 216NG62A HESG441634R1/K
Display operation panel 216NG61A HESG441633R1
Display operation panel 216GD61a
Display operation panel 216EA62 1MRB150083R1/F
Display operation panel 216EA61b
Display operation panel 216DB61 HESG324063R100/J
Display operation panel 216DB61
Display operation panel 216AB61
Display operation panel 216AB61
Display operation panel 1VCF752000
Display operation panel 1TGE120028R0010
Display operation panel 1TGE120028R0010
Display operation panel 1TGE120021R0110
Display operation panel 1TGE120021R0110
Display operation panel 1TGE120021R0010
Display operation panel 1tge120011r1001
Display operation panel 1TGE120011R1000
Display operation panel 1TGE120010R1300
Display operation panel 1TGE120010R
Display operation panel 1TGE106170M4200
Display operation panel 1TGB302003R0003
Display operation panel 1SVR450081R0000
Display operation panel 1SVR360663R1001
Display operation panel 1SVR040000R1700
Display operation panel 1SVR011718R2500
Display operation panel 1SVR011718R2500
Display operation panel 1SNA684252R0200
Display operation panel 1SFB536068D1011
Display operation panel 1SBP260022R1001
Display operation panel 1SAR700012R0005
Display operation panel 1SAP530100R0001
Display operation panel 1SAP520100R0001
Display operation panel 1SAP173200R0001
Display operation panel 1SAP150000R0170 PM590-ETH
Display operation panel 1SAJ520000R0101 UMC100
Display operation panel 1MRS050644
Display operation panel 1MRS050644
Display operation panel 1MRS050496
Reviews
There are no reviews yet.